CVE-2026-106121

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-106121
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-106121.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-106121
Aliases
Downstream
CGA (62)
CLEANSTART (3)
DEBIAN (1)
MINI (11)
RHLW (2)
UBUNTU (1)
Published
2026-10-06T18:08:52Z
Modified
2026-10-22T19:09:25Z
Severity
  • 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
RabbitMQ: JSONReader in the default JSON-RPC mapper never terminates on truncated input, causing DoS
Details

The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.37.0, com.rabbitmq.tools.json.JSONReader.read() fails to terminate when input ends inside a quoted string or a line comment because its string and whitespace scanners do not stop at CharacterIterator.DONE. The default DefaultJsonRpcMapper passes JSON-RPC message bodies to this parser for JsonRpcServer and client replies. A truncated string causes the parser to append replacement end markers until heap exhaustion, while a line comment without a terminating newline can keep a thread consuming CPU indefinitely, resulting in denial of service. This issue is fixed in version 5.37.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106121.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "fixed": "5.36.1"
                        },
                        {
                            "fixed": "5.36.1"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/rabbitmq/rabbitmq-java-client

Affected ranges

Type
GIT
Repo
https://github.com/rabbitmq/rabbitmq-java-client
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
002777578d9138a9921ddfc4f9fb70556f8d4807
Fixed
25fad817291feff3195c32620117d295598f8b41
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:vmware:rabbitmq_java_client:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "5.37.0"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "25fad817291feff3195c32620117d295598f8b41"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v5.37.0",
            "range": [
                {
                    "fixed": "002777578d9138a9921ddfc4f9fb70556f8d4807"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

Other
rabbitmq_v1_4_0
rabbitmq_v1_6_0
rabbitmq_v1_7_0
rabbitmq_v1_7_1
rabbitmq_v1_7_2
rabbitmq_v1_8_0
rabbitmq_v1_8_1
rabbitmq_v2_4_0
rabbitmq_v2_7_0
rabbitmq_v3_4_1
rabbitmq_v3_4_2
rabbitmq_v3_4_3
rabbitmq_v3_4_4
rabbitmq_v3_5_0
rabbitmq_v3_6_0
rabbitmq_v3_6_0_milestone1
rabbitmq_v3_6_0_milestone2
rabbitmq_v3_6_0_milestone3
rabbitmq_v3_6_0_rc1
rabbitmq_v3_6_0_rc2
rabbitmq_v3_6_0_rc3
rabbitmq_v3_7_0_milestone1
rabbitmq_v3_7_0_milestone10
rabbitmq_v3_7_0_milestone11
rabbitmq_v3_7_0_milestone12
rabbitmq_v3_7_0_milestone13
rabbitmq_v3_7_0_milestone14
rabbitmq_v3_7_0_milestone15
rabbitmq_v3_7_0_milestone2
rabbitmq_v3_7_0_milestone3
rabbitmq_v3_7_0_milestone4
rabbitmq_v3_7_0_milestone5
rabbitmq_v3_7_0_milestone7
rabbitmq_v3_7_0_milestone8
rabbitmq_v3_7_0_milestone9
v4.*
v4.0.0
v4.0.0.M1
v4.0.0.M2
v4.0.0.RC1
v4.0.0.RC2
v4.1.0
v4.1.0.RC1
v5.*
v5.0.0
v5.0.0.RC1
v5.1.0
v5.1.0.RC1
v5.10.0
v5.10.0.RC1
v5.10.0.RC2
v5.11.0.RC1
v5.12.0
v5.12.0.RC1
v5.13.0
v5.13.0.RC1
v5.13.0.RC2
v5.14.0
v5.14.0.RC1
v5.15.0
v5.15.0.RC1
v5.16.0
v5.16.0.RC1
v5.17.0
v5.17.0.RC1
v5.17.0.RC2
v5.18.0
v5.19.0
v5.2.0
v5.2.0.RC1
v5.20.0
v5.21.0
v5.22.0
v5.23.0
v5.24.0
v5.25.0
v5.26.0
v5.27.0
v5.27.1
v5.28.0
v5.29.0
v5.30.0
v5.31.0
v5.32.0
v5.33.0
v5.33.1
v5.34.0
v5.35.0
v5.36.0
v5.4.0
v5.4.0.M1
v5.4.0.RC1
v5.4.0.RC2
v5.4.0.RC3
v5.5.0
v5.5.0.RC1
v5.6.0
v5.6.0.RC1
v5.7.0
v5.7.0.RC1
v5.8.0
v5.8.0.RC1
v5.8.0.RC2
v5.9.0
v5.9.0.RC1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-106121.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "270763962845842240998420853875191888627",
                "83194574850271120551945190649757612216",
                "294803679088535842114334935744370211097",
                "91446109598190990967851069848746634684",
                "235693158922043049651000487597878667675",
                "12371646549381439319874435822315116094",
                "66856958431972215751120805408152475418",
                "30400149695438245955906524821459997464"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-106121-48f2d2eb",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/rabbitmq/rabbitmq-java-client/commit/25fad817291feff3195c32620117d295598f8b41",
        "target": {
            "file": "src/main/java/com/rabbitmq/tools/json/JSONReader.java"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "133638509552263276209130131259953087432",
            "length": 397
        },
        "id": "CVE-2026-106121-5a926fb9",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/rabbitmq/rabbitmq-java-client/commit/25fad817291feff3195c32620117d295598f8b41",
        "target": {
            "file": "src/main/java/com/rabbitmq/tools/json/JSONReader.java",
            "function": "string"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "320496648438726301473250035449054578362",
                "95728029130745313480420811566154944965",
                "334466430276800096050679880704818700328",
                "130991488717205056501258671795716903568"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-106121-6fc8e805",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/rabbitmq/rabbitmq-java-client/commit/25fad817291feff3195c32620117d295598f8b41",
        "target": {
            "file": "src/main/java/com/rabbitmq/tools/jsonrpc/JsonRpcServer.java"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "315763766914009131587666914086988765101",
            "length": 233
        },
        "id": "CVE-2026-106121-a2d20155",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/rabbitmq/rabbitmq-java-client/commit/25fad817291feff3195c32620117d295598f8b41",
        "target": {
            "file": "src/main/java/com/rabbitmq/tools/json/JSONReader.java",
            "function": "skipWhiteSpace"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "196040013556389698375258248213926648043",
                "315681126217743703065163098398866469721",
                "181219755514035373047247939129386260401",
                "2048128575536568691977136557939389948",
                "298785235106541279492479740016373684694",
                "78046521289352656596644664421172960486",
                "290302797840753543676360821718451908635"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-106121-be3d0db1",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/rabbitmq/rabbitmq-java-client/commit/25fad817291feff3195c32620117d295598f8b41",
        "target": {
            "file": "src/test/java/com/rabbitmq/client/test/JSONReadWriteTest.java"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "307672480226265302034398180442966691753",
            "length": 1694
        },
        "id": "CVE-2026-106121-c18387af",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/rabbitmq/rabbitmq-java-client/commit/25fad817291feff3195c32620117d295598f8b41",
        "target": {
            "file": "src/main/java/com/rabbitmq/tools/jsonrpc/JsonRpcServer.java",
            "function": "doCall"
        }
    }
]
vanir_signatures_modified 
"2026-10-22T19:09:25Z"